DV is 1394 interface. Used to connect computer 1394 interface for video capture.

AV is to insert one end of the AV cable into the AV output port of the camera, the other end into the video output port of the TV or video recorder, and the red and white cable into the audio output port of the TV or video recorder. Please note that it must be plugged into audio and video output ports. If there is an S terminal, one terminal can be directly connected to the S video output of the TV, and the other terminal can be connected to the audio output of the TV.